In a continuation form this post...
A-coil iced up,
I decided to see how dirty the inside of the coil was. I removed the ductwork from around it and was really hoping to see a clog in there. Couldn't imagine how it would be so dirty though as I have a Space-Guard high efficiency filter on the inlet of the blower. But anyway. The pics below are what I saw. Looks pretty clean to me. Do you guys see anything here that could be my problem? I used a fine brush and a vacuum and cleaned it the best I could, but really didn't remove any dirt/buildup. Is the rust/corrosion on the outside frame of the A-coil anything to be concerned with? Unit is 11 years old.
Thanks in advance for your time/feedback.